While the "Used to Love You" singer unsurprisingly stunned in a semi-sheer, black and silver flower-print gown, Shelton ditched his usual country duds, looking classier than ever before in a super stylish black-on-black three-piece suit ensemble.

Singer Gwen Stefani performs during the State Dinner for Italian Prime Minister Matteo Renzi at the White House in Washington on October 18, 2016. / AFP / YURI GRIPAS (Photo credit should read YURI GRIPAS/AFP/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainers Gwen Stefani and Blake Shelton (C) and New York Gov, Andrew Cuomo attend a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner, with singer Gwen Stefani performing. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani attends a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner, with singer Gwen Stefani performing. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani performs at a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani performs at a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

WASHINGTON, DC - OCTOBER 18: U.S. entertainer Gwen Stefani performs at a state dinner for Italian Prime Minister Matteo Renzi, hosted by President Barack Obama on the South Lawn of the White House October 18, 2016 in Washington DC. The president and first lady Michelle Obama will tonight host their final state dinner. (Photo by Michael Reynolds-Pool/Getty Images)

After the formal dinner, held in honor of Italian Prime Minister Matteo Renzi and wife Agnese Landini, Stefani took the stage to perform where she was joined by her handsome beau, who accompanied her on the guitar.

It's hard to deny just how cute Stefani and Shelton are together, which is why some fans of their whirlwind romance are freaking out over the news that the No Doubt frontwoman is coming back to The Voice as a coach next season! Check out the video below to hear more.